| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 13 | |
| #2 | Germany | 7 | |
| #3 | Canada | 6 | |
| #4 | United States | 6 | |
| #5 | France | 5 | |
| #6 | Australia | 4 | |
| #7 | South Africa | 4 | |
| #8 | Brazil | 3 | |
| #9 | Japan | 3 | |
| #10 | Belgium | 2 | |
| #11 | Spain | 2 | |
| #12 | India | 2 | |
| #13 | Italy | 2 | |
| #14 | Sweden | 2 | |
| #15 | Switzerland | 1 | |
| #16 | EPO (European Patent Office) | 1 | |
| #17 | Ireland | 1 | |
| #18 | Netherlands | 1 | |
| #19 | USSR (Union of Socialist Soviet Republics) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Organic fine chemistry | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Turning | |
| #3 | Heterocyclic compounds | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Orwin Olaf John Barclay | 11 |
| #2 | Orwin O | 10 |
| #3 | Orwin Olaf J B | 6 |
| #4 | Fortune David John | 5 |
| #5 | Beasant Andrew James | 3 |
| #6 | Fortune David J | 3 |
| #7 | Beasant A | 2 |
| #8 | Fortune D | 2 |
| #9 | Orafu Jiyon Baakurei Oouin | 2 |
| #10 | Orwin O J B | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB8723038D0 | Torque limiting clutch | |
| GB8719292D0 | Torque limiting clutch | |
| GB8620214D0 | Torque limited clutch | |
| GB8415749D0 | Torque limiting clutch with delay re-set | |
| GB2080449A | Torque limiting clutch | |
| ZA8104797B | Torque limiting clutch | |
| CA1039668A | Torque limiting clutch | |
| CA1005005A | Overload clutch | |
| US4007818A | New or improved torque limiting clutch | |
| GB1517693A | Torque limiting clutch | |
| GB1537027A | Overload clutch | |
| GB1517692A | Torque limiting clutch | |
| GB1447482A | Overload clutch | |
| GB1447483A | Overload clutch | |
| GB1370011A | Torque limitting devices | |
| GB1327775A | Flexible couplings | |
| DE1949205A1 | Collet | |
| US3595593A | Collets |